Internal-combustion engine.



J. l. Bum INTERNAL COMBUSTION ENGINE.

APPLICATION FILED MAR. 24. I9I6. `I,226A62 Patented May15,1917.

'1. 1. BURR. INTERNAL COMBUSTION ENGSNE.

APPLICATION FILED MAR. 24,1916. L226A62.,

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Patented May15, 1917.

I.. I. BURR. INTERNAL COMBUSTION ENGINE.

APPLICATION FILED MAR-24| I9I5| 1,226,452, Patented May 15, 1917.

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J. l. BURR. INTERNAL cofABUsTIoN ENGINE.

V APPLICATION FILED MAR. 24, 1916. L226A62,

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Patented May 15, 1917.

JAMES I. BURR, OF FIERRO, NEW MEXICO.

INTERNAL-COMBUSTION ENGINE.

Specification of Letters Patent.

Patented May 15, 1917.

Application led March 24, 1916. Serial No. 86,406.

Y 10 all whom it may concern.'

Be it known that I, JAMEs I. BURR, a citizen of the United States, residing at Fierro, in the county of Grant and State of New Mexico, have in vented certain new and useful Improvements in Internal-Combustion Engines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to new and useful improvements in internal combustion engines and more particularly to that class of engines known as the Diesel type in which the combustion is caused by the injection of oil and air under great pressure.

The principal object of this invention is to provide a valve actuating means by which the engine may be readily reversed or operated in a forward direction without necessitating the making of a stop and the changing of various adjustments.

Another object of the invention is to provide a novel form of valve operating link for use in connection with engines of this character which when shifted to one position will cause the engine to operate ina forward direction and when in the opposite position will cause the same to` operate ina reverse direction.

A further object of the invention is to provide a novel form of oil pump for injecting the oil into the engine under great pressure which pump is actuated by the link mechanism thereby insuring the proper timing of the motor.

Still another object of the invention is to provide a novel means for actuating the eX haust valve and insuring the'proper timing thereof.

With these and other objects in view, the invention consists in the novel combination and arrangement of parts which will be fully set forth Vin the following specification and accompanying drawings, Vin which Figure 1 is an end elevation of a motor showing this improved valve attachment applied thereto.

Fig. 2is a top plan view of Fig. 1.

Fig. 3 is a side view in elevation of Fig. 1.

Fig. 4 is a view similar to Fig. 1, illustrating the exhaust valve actuating link.

Fig. 5 is a detail perspective view showing the adjustable toe cam and the means for making the adjustment.

designates the cylinder of an engine pro` vided with the usual cylinder head 2. The head is provided with the usual exhaust port closed by the ordinary type of puppet valve the stem of which is designated by the numeral 4: which stem is surrounded by Y coil springs 5, the upper end of which bears against the nut 6 on the upper end of the valve stem and normally holds said valve closed. A suitable inlet valve is provided in the cylinder head and the valve stem of the inlet valve is designated by the numeral 7 and carries a roller 8, the use of which will appear as the description proceeds. This inlet valve is adapted to be spring pressed so as to normally remain closed and the port of the valve is connected by means of the pipe 9 to the oil pump designated generally by the numeral l0 which will be more fully hereinafter described.

Secured to the side of the cylinder 1 is a plate 11 carrying a bracket designated generally 12 provided with the arms 18 and 14. The arm 14- is provided with a suitable bearing in which the shaft 15 is j ournaled which will hereinafter be referred to as the eccentric shaft. The shaft 15 carries a pair of eccentrics 16 which are arranged in diametrically opposed relation and a similar pair of eccentrics 17 which are likewise ain ranged in diametrically opposed relation but at right angles to the eccentrics 16.

A suitable bracket 18 is formed integral with the cylinder head 2 and is provided at its outer end with a bearing 19 for mounting the toe cam 20, one arm of which engages the nut 6, while the other arm has pivotally connected thereto a link 21, the lower end of which is pivotally connected to the bell crank 22 which in turn is pivotally mounted to the standard 23 formed on the arm 13 of the bracket. The end of the bellcrank 22 opposite the one which is connected to the link 21 has pivoted thereto a link 2li which is pivotally connected to a sliding block 25 which is slidable in the slot 26 of the rocker 27. This rocker 27 is arcuate in form as clearly shown in the drawings and has pivotally connected to opposite ends as at 28 the arms 29, which are provided at their lower ends with eccentric straps 30 which are adapted to surround the eccentrics 17 so that upon rotation of the eccentric shaft 15 the rocker 27 will be moved to actuate the exhaust valve.

In order to actuate the intake valve a suitable standard 31 is formed on the cylinder head and has pivotally connected thereto a lever 32 which is formed integral with a toe cam 33. A link 34 is pivotally connected to the lever and the opposite end of the link is pivoted to the arm of a bell crank 35, the opposite arm of which is pivoted at 36 to the lever 37 of a toe cam designated generally by the numeral 38 which is pivoted at 39 to'a standard 40 formed near the outer end of the arm 13 of the bracket 12. A suitable retractile coil spring 41 is connected to the toe cam 38 and normally tends to move the same downwardly as clearly shown in Fig. l. Formed integral at the outer end of the arm 13 of the bracket 12 is an outwardly and upwardly extending arm 42 having rotatably mounted therein a stud 43 provided with an eccentric head 44. The head of the stud forms a bearing for the toe cam designated generally 45 and this toe cam is provided with the arm 46 for engagement with the toe cam 38 and the lever 47 as clearly shown in Fig. 5. Pivotally mounted on the stud 43 is a lever 48 carrying at its upper edge an outstanding ear 49 in which a set screw 50 is threaded. The lower edge of the lever 48 carries the box l51 in which a stud 52 is slidably mounted and this stud is adapted to engage the under side of the lever 47 to force the same upwardly and into engagement with the set screw 50. A flange 53 is formed on the stud 52 near its upper end and itis adapted to be forced upwardly by the upper end of a compression coil spring 54 mounted within the box 51 as clearly illustrated in Fig. 5. Pivotally connected at 55 to the outer end of the lever 48 is a link 56 the upper end of which is pivoted at 57 to the sliding block 58 which is slidable in a groove 60 formed in the rocker 61. Pivoted at 62 to opposite ends of the rocker are the converging arms 63 the lower ends of which terminate in eccentric straps 64 for surrounding' eccentries 16 so that upon rotation of the eccentric shaft 15 the rocker 61 will be moved.

From the foregoing description it will be seen that the rotation of the eccentric shaft will cause the rockers 27 and 61 to oscillate thereby operating the exhaust and intake valves. Y

In order that the fuel oils may be injected into. the cylinder yat the proper instant with relation to the operation of the intake valve, the link 62 is pivotally connected at 36 to the pivotal connection between the bell crank 35 and the lever 37. The lower end of the link 62 is pivoted to a rocker 63 which in turn is pivotally connected to the horizontal arm 13 intermediate its ends. The end of the rocker 63 opposite its pivotal connection 62 is pivoted to a suitable link 64 which is pivoted at its lower terminal to the rocker link 65. This link 65 is provided with a longitudinal slot 66 and is arcuate as is shown and carries a dependingear 67 which is pivotally connected to the link 68,

the lower terminal of which is in turn pivoted to the pump plunger 69 as clearly shown in Fig. 1. A suitable fulcrum lever 70 is pivoted to the arm 14 of the bracket and the upper end of this fulcrum lever is provided with an extension 7l which is slidable in the slot 66 so that the length of stroke of the pump plunger 69 may be regulated. It will thus be seen that upon the movement of the link 70 toward one end of the slot 66 the stroke of the pump plunger 69 will be shortened, while when it is moved toward the opposite end the stroke will be lengthened thereby insuring the proper adjustment of the strokes.

The pump above referred to is best illustrated in Fig. 7 and comprises the body 71 provided with the axial bore 72. The pump above referred to is designated generally by the numeral 10 and Vformed integral with the body is a suitable plate '33 which is adapted to be attached to the sprocket as illustrated in Fig. 1. In order to prevent the escape of oil around the plunger 69, a suitable packing flange 74 isprovided at the upper end of the body 71 as clearly shownin Fig. 7. Formed at the lower terminal of the bo y 71 is a horizontally extending cylindrical body 75 provided on its under side and intermediate its ends with a hollow'boss 76 having the axial opening 77 therein which alines with the opening 72 and forms a guide for the piston '69. A suitable plug 7 8f is threaded into the lower terminal of the boss 76 and forms a closure for the opening 77 as clearly shown in the drawing. Y

Formed in the body 75 is a longitudinal extension 79 which communicates at one end with the downwardly extending vertical passage 7 9 which communicates at one end with the downwardly extending vertical passage 8O which in turn communicates with the horizontally extending passage 81 formed in the offset portion 82 of the body. A suitable valve seat 83 isrformed at the point where the passage 79 joins the passage 80 anda suitable ball valve 84 seats on said valve seat to form a closure for the inlet port of the pump. A plug 85 is threaded into the body directly above the valve seat and is adapted to allow access to the interior of the valve to permit the ball 84 to be removed and allow the passage to be cleaned. A suitable downwardly extending passage S6 is formed in the boss S7 which is formed intermediate the ends of the offset portion S2 and at the point where this passage 86 joins the passage 81 a suitable valve seat 88 is provided on which the ball valve 89 is seated. The plug 90 is positioned directly over the boss 87 so as to give access to the ball valve S8 as clearly illustrated in the drawings. A suitable plug 91 closes the end of the passage 82 opposite the one which joins the passage 80 and a suitable intake port 91 oins the passage 86 at its lower terminal and is adapted to be connected to any suitable fuel supply. Formed at the end of the passage 79 opposite the passage 80 is a vertically extending passage 93 which oins at its upper end the horizontal passage 94 formed in the upwardly offset portion 95 of the valve body. A valve seat 96 is formed at the point where the passages 93 and 94 join and seated on said valve seat is the ball valve 97. The plug 9S allows easy access to the ball valve 97 and the valve seat 96 as clearly illustrated in Fig. 7. A vertical passage 99 is formed at the extreme end of the passage 94 opposite the passage 93 and communicates with the passage 100 formed in the threaded boss 101 which is connected to the pipe which leads to the cylinder of the engine. A valve seat 102 is formed at the point where the passages 99 and 100 join and the ball valve 103 is positioned on said seat and like the valves and valve seat previously described a plug 104 is positioned directly over the valve seat 99 and threaded into the threaded bore 105 in aXial alinement with the passage 99 to allow easy access to the valve seat and ball valve 102 and 103 respectively.

It will be apparent that the operation of the pump is as follows: The liquid flows into the pump through the passage 92 and thence upon the up stroke of the piston 69, it is drawn through the passage 81 into the passage 7 9, whereupon the downward stroke of the piston 69, the liquid is forced out past the valve seat and valves 96, 97, 102 and 103 through the openings 100 into the pipes that lead to the cylinder and to the intake valve of the motor. It will thus be seen that a high pressure pump is provided which will inject the liquid into the cylinder under an exceedingly high pressure and which is operated simultaneously upon the opening of the intake valve.

lt will be apparent from the foregoing that in operation, the rotation of the crank shaft of the motor will drive the eccentric shaft thereby rocking the links. The operation of the links will control the movements of the intake and exhaust valves and when the intake valve is opened, it will be apparent that the oil will be injected under high pressure from the pump into the cylinders.

The high pressure of the inflowing oil and the high pressure of the air injected into the cylinders simultaneously through the intake valve will cause the combustion of the mixture, thus operating the engine. lVhen it is desired to reverse the direction of operation of the motor or engine the links are thrown j to their downward position as illustrated in Fig. 5 and it will be evident that the changing position of the links will cause the valve to be operated at different times thereby changing the direction of the operation of the engine. l

While in the foregoing there has been shown and described the preferred embodiment of this invention, it is to be understood that such changes may be made in the combination and arrangement of parts as will fall within the spirit and scope of the appended claims.

What is claimed is 1. A valve actuating means for internal combustion engines comprising an eccentric shaft, means to drive the eccentric shaft, rockers operated by the eccentric shaft, links connected to the rockers for actuating the intake and exhaust valves of the engine and an oil pump for injecting oil under high pressure into the engine, said pump being actuated upon the operation of the intake valve.

2. A valve actuating means for internal combustion engines having intake and eX- haust valves comprising an eccentric shaft, rockers operated from the eccentric shaft, links for controlling the operation of the intake and exhaust valves, said links being connected tothe rockers, an oil pump for inj ecting oil under high pressure into the engine when the intake valve is open, a link and lever mechanism for actuating said pump and means to control the length of the stroke of the pump plunger.

3. A valve actuating means for internal combustion engines including the combination with an internal combustion engine of the Diesel type having an air intake valve, an oil intake port and an exhaust valve, of an eccentric shaft, eccentrics mounted on said shaft, rockers operated by the eccentrics said rockers being adapted to be shifted to reverse the operation of the engine, links connected to the rockers for controlling the operation of the air intake and the exhaust valves, links actuated by the intake rocker for operating a pump, for injecting fuel under high pressure to the cylinder of the engine and means to control the length of the stroke of the pump plunger.

4. In an internal combustion engine having an air intake valve, an exhaust valve and a port for the admission of oil under pressure, an oil pump, a valve actuating means comprising a pair of rockers, one of said rockers being adapted to actuate the exhaust valve, links connected to the opposite rocker for operating the air intake valve, links connected to the intake operating links for controlling the operation of the pump and means for regulating the length of stroke of the pump.

5. In an internal combustion engine having an aii` intake valve, an exhaust valve and a port for the admission of oil under pressure, an oil pump, a Valve actuating means comprising a pair of rockers, one of said rockers being adapted to actuate the exhaust valve, links connected to the opposite rocker for operating the air intake Valve, links Connected to the intake operating links for controlling the operation of the pump, and a fulcrum lever for controlling the length of stroke of the pump piston.

In testimony whereof I aflixvmy signature in presence of tWo Witnesses.'

JAMES I. BURR. I/Vitnesses:

WALTER W. PAGE, C. DON HOLTRY.

Copies o1 this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C. 

